雨海地区月岭分布特征及控制因素分析  

Distribution characteristics and controlling factors of lunar mare ridges in Mare Imbrium

作　　者：许延波[1,2] 颜丹平[1,3] 俞天石[1,4] 王翔[1,5] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]山东黄金地质矿产勘查有限公司,山东莱州261400 [3]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [4]湖南省地质博物馆,湖南长沙410004 [5]中国地质调查局发展研究中心,北京100037

出　　处：《地学前缘》2012年第6期60-71,共12页Earth Science Frontiers

基　　金：国家高技术研究发展计划"863"项目(2009AA122201)

摘　　要：月岭是月球表面上最常见的线性构造之一,大多分布于被玄武岩充填的月海之中。虽对于月岭成因的观点不一,但多数月岭具有明显的挤压变形特征,其展布形式有单列、组或群(常见)、网状或雁列状等。月岭的形成和展布既受到月海盆地构造的控制,又受到区域应力状态的影响。文中以雨海为研究区域,利用美国环月球巡逻者(LRO)的宽视角影像(WAC)数据和激光高度计(LOLA)数据对雨海地区的月岭构造进行解译和提取,对月岭进行分类和统计分析,结合雨海盆地构造特征以及月岭构造的样式解析,并运用沙箱构造物理模拟方法对月岭的形成和分布进行模拟实验,讨论了雨海地区影响月岭形成和分布的主控因素。结果表明,月岭是挤压体制下形成的;盆地构造是控制月岭类型Ⅰ分布的主要因素;月岭类型Ⅱ的分布主要受区域构造应力控制,其走向主要反映区域构造的最大主应力方向。综上推断,雨海地区月岭形成于近东西向最大主应力并受到雨海盆地构造的控制,表现为月岭类型Ⅰ和月岭类型Ⅱ的综合样式。Lunar mare ridge is one of the most common lineaments on the moon,and mainly distributes in the lunar mare region.Most lunar mare ridges have obvious compressive deformation characteristics,while sometimes occurring as single features,most commonly occur in groups forming a variety of braided,sinuous,or en-echelon patterns.The formation and distribution of lunar mare ridges are both controlled by the structure of mare basin and regional stress state.In this paper,taking Mare Imbrium as the research region,mare ridges were interpreted by using LRO WAC images with LOLA,counted and classified.Combining the structure of Mare Imbrium with structural style of mare ridges,we discussed the controlling factors on the formation and distribution of mare ridges by physical modeling method.The result shows that mare ridges occurred in compressive regime,and basin structure is the main controlling factor for mare ridge type Ⅰ,while regional stress for mare ridge type Ⅱ indicates the orientation max stress.Therefore,the inference that the two types of mare ridges in Mare Imbrium formed in a state with EW oriented max stress,being controlled by basin structure,was suggested.

关 键 词：月岭 分布 控制因素 构造样式 构造物理模拟 雨海地区 

分 类 号：P184[天文地球—天文学]